alleryPutting a = 3 in the expression 5a gives
A8
B35
C15
D53
Answer & Solution
Correct answer: C. 15
1. Substitution means replacing the letter with its value.
2. 5a becomes 5 × 3.
3. That equals 15; 8 would come from adding and 35 from joining digits.
_Source: Wikipedia, Elementary algebra, Substitution_
Keep practising Algebra
Browse all Algebra questions for CTET, or explore more Mathematics topics.
Related questions
Find x when 2(x + 3) = 20.What value of x makes x / 4 + 2 = 6 true?If 3x - 7 = 11, what is x?In algebra, the statement a < b is read asGroups, rings and fields are studied in which branch of algebra?If a = 3 and b = 2, what is the value of a^2 + b?Find the value of 3x^2 when x = 2.Using s = 60 × m, how many seconds are in m = 5 minutes?